Extension doorlock



Nov. 10, 1931. A. L. HANSEN' 1,831,067v

EXTENSION DOORLOCK U Filed Dec. 15. 1928 inA Patented Nov. l0, 1931'- UNITED STATES PATEN'i-v OFFICE AUGIE L. HANSEN, O F CHICAGO, ILLINOIS, ASSIGNOR TO A. L. i HANSEN MFG. CO., OF i v CHICAGO, ILLINOIS, CORPORATION OFILLINOISl EXTENSION DooRLocK Application filed DecemberV 15, 1928. Serial No. 326,171.

This invention relates to improvementsin extension door locks, and more particularly to locks for vehiclerdoors characterized by or vehicle manufacturer in applying the saine to the door frame. So far as I am aware, it is the present practice to manufacture this type of lock in several parts or units consisting of a lock casing, an extension inside handle mounting and a connecting member or link which must be litted and yappliedseparately to the door frame.

It is the object of the present invention to provide a one-piece self-contained extension lock which may be applied to a door frame as a unit, thus eliminating the additional labor of fitting, assembling and adJusting the parts as is the case in the usual design of locks of this'type.

A preferred embodiment of the invention is disclosed in the accompanying drawings, in which Figure l is a view in rear or inside elefr vation of a typical frame for a vehicle door line 4, 4 of Figure 3.

with the extension lock applied.

Figure 2 is a view in end elevation of the door frame with the lock applied. Y

Figure 3 is an enlarged View in elevation of the extension lock removed from the door, and

Figure 4 is a top plan view of the lock, withl the bolt casing shown in section as taken on The door frame l to which the lock is applied consists of the usual upright frame members or stiles 2, top and bottom rails 3, 3

and an intermediate cross-member 4, the latter dividing the Window opening above, from the enclosed space or Well below, for the glass Window panel.

v For convenience, the left-hand stile will be considered the front or free edge of the door, it beingr understood that the hinges would be mounted along the opposite edge when the door is fitted into the door opening of the body frame.

Referring to the "lock, the saine consists generally of a rectangular base plate 5 elongated in one direction toa length somewhat less than one-half the width ofthe door frame. v At one end of the plate is a flange 5a bent substantially at right angles. Secured to the back face of the plate 5 and ini`medil ately behind the flangerais a bolt casing 6 enclosing the locking bolt 7 the sainebeing of the usual endwise shiftable type backed by a spring (not shown), the end of the bolt projecting through a slot in the flange 5a. The bolt casing 6 isrelatively shallow and has a flange 6a along its rear edge, which is preferably spot-welded to the 'base' plate. Journalled in the lock-casing adjacent the lower edge of the bolt is a bushing 8 having a square axial bore to receive the square shankl of the outside T-handle 9. Fixed to the bushingj is a lever 10 having an arm 10a extending intoV a slot v7a in the adj aceiit-edge of the bolt 7,l the length of the slot being equal to the throw of the bolt. The bolt is back-ed by a ycoil spring 1l, lying within a channel 7b in the bolt and bearing against the end Wall of the bolt casing.k Thus by turning the T-handle the bolt is'shifted in the usual manner to release it from its keeper (not shown) onthe door j amb. Inasmuch as the construction of the lock proper follows the usual practice, it has j not been 4thought necessary to describe or illustrate it in detail. Adjacent theopposite end of the base plate from the bolt casing is the mounting for the inside extension operating handle 13 vcomprising a stub-shaft 14 passing through a hole punched 'in the base plate.4 A flanged cup-shaped boss l5 of pressed metal is weldved to the inside face of the plate 5, and forms from the aXis of the first sector and nearer the bolt casing As these sectors are designed, thereA are, kthree intermeshing teeth 16a and 17a, and one large or oversized tooth 1Gb and 17 b on each sector, sothatthe two can rotate through say 30 in either direction, but are lockedV against further rotation in one directionby the ylocking ofthe twolarge teeth. AIntegral with the second or driven sector 17y uisaslottedarm 18 offset slightly from the planeofthe sector so that it stands awayvvfrom the face of the plate and in its normal position extends lengthwise of the base plate and in line with the bolt 7. Connecting 'thebolt Z'wth the slotted arm 1 8 is a rod 19,7its ends being bent at right angles to form shortstubs 19a, one slidably engagingthe slot 18a Ain the arm 18, andthe other ,inserted into ahole' 2()` drilled through the bolth? near its rear end. To reachthe bolt, the rod passes through an opening 21 cut in the end wall of the bolt casing 6. s

As shown Figures 1V and?, ythe complete locking device is fastened tothe insidev of the vdoor frame 1 at the intersection ofthe front stileV 2 and the cross-member 4, with thelock case 6 innermost and the inside handl'e l'outermost. Along the forward and upperv edges ofthe base plate are screw holes 5b punched and counter-sunk to receive the screws which secure thedevicein place. lt

will be noted thatjthe front` stile 2 is rabbeted along its inside edge so that' theviiange 5a of the base plate lies intliis rabbet, and additional screws are: driven endwise through screw. holesat each corner of the iange. As thus mounted, the upper margin of the base overlies the lower edge of the cross-member 4 which just clears the connecting rod 19 and gear sectors 16 and 17 while the stile and a portion of the cross-member are cut away to form a recess for theloc'k casing.'

In thenormal'position of the lock, the bolt 7 is extended outwardly under the action of thespring 11, andthe rod 19 is likewise drawn forwardly with its rea-r end jat the forward enduof the slotted lever arm 18. In this position, thefbolt' and rod are free to slide in both directions without moving `theinside handle, ,as would take place when the doorlis rslammed closed or opened `from the outside. Similarly, toopen the doorfro'm the inside, the 'handle 13 isturn'ed in a .clockwise direction (Figure 1) that( is, @Ward thelock casilg, the rod lQbeing shifted endwise to retract'the bolt jandthns'release it from its keeper. It will be noted that the direction in which the inside operating lever is j. rotated is opposed to the direction of movement of the bolt due to the intermediate gear sectors. Hence a forward push on the inside handle withdraws the bolt and permits the door :to be opened.

I claim as my invention:

1.fAn extension door lock comprising a Alock -casing .having a,v bolt mounted on the door frame .adjacent one edge, a plate 'iiX'ed to the door frame remote from said lock cas- .'ing, ahandle-operated shaft journalled on said plate, a gear sector mounted on said shaft, a complementary gear sector journalled on said plate and meshing with said first-mentioned gear sector, said complement-ary gear sector having 'a slot therein Vof a lengthl equal to the throw of said bolt,

a rod .connected at one end with said bolt and having sliding connection at its opposite enel .wi h the slot of said gear sector, one of said gear sectors having an oversized tooth adapted kto engage the teeth of the other gear sector to limit the turning movement of said handle in one direction.,

2. An extension door lockfcomprisinga lock casinghavinga bolt mounted on the door frame adjacent one edge, a` plate fixedV to the door frameremote from said lock casing,y a handle-operated shaft journalled on said plate, agear sectonmounted onA said shaft, a complementary gear sector journalled onsafd plate and meshing with said rst-mentionedV gear sector, said complementary gear sector having a slot therein of a length'equal to the throwof said bolt, a rod connected at one end with lsaid bolt and having sliding connection at its opposite'end lwith theslot of said gear sector, said lgear sectors having oversized teeth adapted'to engage each other at the end of the return movement 'of said handle from bolt-operating position tolock the parts from further movementin the same direction.

Signed at Chicago, Ill., this'tenth" day of December, 1928.

. AUGIE L. HANSEN. 

